[SIPForum-discussion] [Q] SIP/TCP vs SIP/UDP

[Sunny Xu]

In TCP, after the connection created, we don't need send REGISTER periodically but only the first time. Because the TCP's keeping alive mechanism is better than SIP's, I think so.

I think this is an advantage for SIP/TCP in some situation.

 

Sunny

 

 

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From: discussion-bounces at sipforum.org [mailto:discussion-bounces at sipforum.org] On Behalf Of ???
Sent: Monday, March 13, 2006 6:44 PM
To: discussion at sipforum.org
Subject: [SIPForum-discussion] [Q] SIP/TCP vs SIP/UDP

 

Hi All,

 

I’m wondering if there’s any reason to prefer SIP/UDP to SIP/TCP..

 

If a phone exists behind NAT/FW, it should send REGISTER periodically, I think.

In case of UDP, the phone just sends the REGISTER message without any keeping up connection.

But in case of TCP, the phone should keep the TCP connection all the time, in which I think there’re

some unexpected problem.

 

Actually I should consider the deployment of SIP/TLS and SRTP, 

and I seriously think over the possible problem that I don’t know, especially relating the NAT/FW.

 

If you have any comments about my difficulty, please let me know..

 

Thanks in advance..

 

Peter Kim

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